Machine eor curvilinear sawing



'UNITED STATES PATENT OFFICE.

ENOCH CONGER, OF MELMORE, OHIO.

MACHINE FOR CURVILINEAR SAWING.

Specification of Letters Patent No. 82,978, dated August 6, 1861.

To all whom it may concern.'

Be it known that I, ENooI-I CONGER, of Mehnore, in the county of Seneca and State of Ohio, have invented a new and Improved Sawing-Machine; and I do hereby declare that the following is a full, clear, and exact description of the saine, reference being had to the annexed drawings, making a part of this specification, in which- Figure l is a side sectional view of my invention taken in the line L2-a1, Fig. 3. Fig. 2 a transverse vertical section of same taken in the line ai', Fig. l. Fig. 3, a horizontal section of same taken in the line y, y, Fig. l. Fig. 4 a detached sectional view of the saw and parts immediately connected therewith, t-aken in the line a, .2, Fig. 2.

Similar letters of reference indicate corresponding parts in the several figures.

This invention relates to that class of sawing machines which are designed for sawing stuff in curved form.

The object of the invention is to simplify and economize in the construction of this class of sawing machines and at the same time render them efficient, more so, it is believed, than any of those heretofore arranged.

To enable those skilled in the art to fully understand and construct my invent-ion I will proceed to describe it.

A. is a framing which niay be constructed in any proper manner to support the working parts of the machine.

B. B. are uprights secured one to each side of the framing and connected at their upper ends by a cross bar C.

D. is an upright rectangular frame the top and bottom crosspieces a, a, of which project beyond the side pieces I), b, and are fitted in the uprights-B. B. and allowed to slide laterally therein; the lower cross piece a, also extending through the sides of the framing as shown clearly in Fig. 2.

Within the frame D. a saw-gate E. is placed and allowed to work freely up and down. This saw-gate is operated by a pitman F. from a crank shaft G. at the lower part of the framing A., the shaft G. being rotated by a belt I-I. or by prop er gearing from the driving shaft I.

J. J. represent ways or guides which are secured on the framing A. parallel with each other. These ways or guides pass through the saw gate E. and on them a carriage K.

is placed and allowed to work freely back and forth thereon.

To the front end of the carriage K. a nut L. is secured said nut being formed of two parts o, o, which are attached to bars al, d, the latter being connected to a lever e, by operating which the two parts o, o, of the nut may be made to grasp a screw-shaft- M. and released from it when desired.

The shaft M. is rotated by a belt f, from a shaft N. which has a cone O. at one end of it, a belt P. passing around said cone and around a similar cone Q. on the crank shaft G. By| changing the position of belt P. on the cones O. Q. which are in reverse positions the speed of the rotation of the shaft N. may be varied as desired.

B. is a saw which is placed in the sawgate E. and is connected at its ends by cords F. to screw-rods g, g, which pass through the cross pieces 71 L, of the sawgate and have nuts z', on them. By screwing up the nuts z', the saw R. will be strained and the cords F. will form flexible connections between the ends of the saw and the rods g, g.

To each end of the saw R. there is attached a horizontal arm S., each of which has a nut y', near its outer end. Through the nuts j, screw rods T.' pass, one through each nut, and the outer ends of the rods T. are connected by the swivels 7c, to arms U. U. which project horizontally from an upright bar V. which is fitted in the saw-gate E. at one side and is allowed to turn freely therein.

The face side of the bar V. is of fiat form and bears against a pattern lV. which is secured longitudinally to one side of the carriage K. and has its face edge curved corresponding to the desired form of the cut to be made. The face of bar V. is kept in contact with pattern lV. by springs X. See Figs. 2 and 3.

The stuff Y. to be sawed is secured on the carriage K. which is drawn out from saw R. so that the front end of the stuff will be in front of the saw. The shaft I. is rotated by any convenient power and a reciprocating movement is given the saw-gate E. by pitman F. from the shaft G. and the screw shaft M. is rotated by the belts f, P. and in connection with nut I. moves the carriage K. along and feeds the stuff Y. to the saw. As the. stuff Y. moves along, the pattern lV. turns the bar V. in consequence of its face side being fiat, see Fig. 3, and the saw R. is

correspondingly turned, through the medium of the arms S. rods T. and arms U. and the saw therefore, in consequence of being thus turned will have the plane of its cutting movement continually changing to correspond to the form of the pattern `WQ and the frame D. being moved laterally by the pattern and springs the cut of the saw or saw kerf `Will correspond With the pattern lV. See Fig. 3. Thus by this simple arrangement a very efficient machine is obtained for sawing curved articles.

The carriage K. is quickly gigged back by opening' the parts c, c, of the nut L. so that the latter Will be free from the shaft M. The cords F. admit of the saw R. being readily turned, there being but little fric- ENOCH CONGER.

`Witnesses z JOI-1N CHAMBERLIN, WILLIAM R. TrrTLE. 

